Heads up that last week we ended up estimating sprint 31. Mailing here for completeness.
https://trello.com/b/BW5L3PEn/mobile-app-sprint-31-main-article-browse-searc...
Android engineers notice that most of the stories in the sprint are *not* estimated as they are bugs and thus a drag on velocity. This was the team norm we adopted many months ago. It'll be especially noticeable this sprint as we have a ton of defects to fix on Android.
Let me know if you have any questions especially if you're traveling
--tomasz